Patents by Inventor Craig A. Masmar
Craig A. Masmar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6672952Abstract: A tearable abrasive article is provided which includes a backing comprising a polymer film having a scrim partially embedded therein and an abrasive coating comprising a plurality of abrasive articles and a binder bonded to at least one side of the backing.Type: GrantFiled: December 23, 1998Date of Patent: January 6, 2004Assignee: 3M Innovative Properties CompanyInventors: Craig A. Masmar, Jeffrey S. Peterson, Michael L. Teetzel
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Patent number: 6372336Abstract: A coated abrasive article comprises a backing, a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable preferably, melt-processable resin containing an epoxy resin, an ethylene-vinyl acetate copolymer, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The above binder precursors of the invention are preferably free of homopolymers and copolymers of olefinic monomers. In another aspect, the invention also describes an energy curable first binder precursor containing an epoxy resin, an ethylene-vinyl acetate copolymer, a polyfunctional acrylate component and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated backing material.Type: GrantFiled: May 3, 2000Date of Patent: April 16, 2002Assignee: 3M Innovative Properties CompanyInventors: Thomas M. Clausen, Gregg D. Dahlke, Robert J. DeVoe, Craig A. Masmar
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Patent number: 6258138Abstract: A coated abrasive article comprises a backing, a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable preferably, melt-processable resin containing an epoxy resin, an ethylene-vinyl acetate copolymer, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The above binder precursors of the invention are preferably free of homopolymers and copolymers of olefinic monomers. In another aspect, the invention also describes an energy curable first binder precursor containing an epoxy resin, an ethylene-vinyl acetate copolymer, a polyfunctional acrylate component and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated backing material.Type: GrantFiled: May 3, 2000Date of Patent: July 10, 2001Assignee: 3M Innovative Properties CompanyInventors: Robert J. DeVoe, Thomas M. Clausen, Gregg D. Dahlke, Clayton A. George, Naimul Karim, Craig A. Masmar
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Patent number: 6077601Abstract: A coated abrasive article comprises a backing, a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable preferably, melt-processable resin containing an epoxy resin, an ethylene-vinyl acetate copolymer, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The above binder precursors of the invention are preferably free of homopolymers and copolymers of olefinic monomers. In another aspect, the invention also describes an energy curable first binder precursor containing an epoxy resin, an ethylene-vinyl acetate copolymer, a polyfunctional acrylate component and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated backing material.Type: GrantFiled: May 1, 1998Date of Patent: June 20, 2000Assignee: 3M Innovative Properties CompanyInventors: Robert J. DeVoe, Thomas M. Clausen, Gregg D. Dahlke, Clayton A. George, Naimul Karim, Craig A. Masmar
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Patent number: 5922784Abstract: A coated abrasive article comprises a backing, a first binder (i.e., a make coat) on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable melt-processable resin containing an epoxy resin, a polyester component, a polyfunctional acrylate component, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated porous cloth material.Type: GrantFiled: September 2, 1998Date of Patent: July 13, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. DeVoe, Gregg D. Dahlke, Kimberly K. Harmon, Craig A. Masmar
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Patent number: 5863847Abstract: A coated article comprising a backing and a binder is disclosed. The binder precursor is an energy-curable melt-processable resin containing an epoxy resin, a polyester component, a polyfunctional acrylate component, and a curing agent for crosslinking the epoxy resin. The binder precursor is cured to provide a crosslinked coating. The invention also relates to a method of producing such coated articles and a surface-treated porous cloth material.Type: GrantFiled: March 23, 1998Date of Patent: January 26, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. De Voe, Gregg D. Dahlke, Kimberly K. Harmon, Craig A. Masmar
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Patent number: 5766277Abstract: A coated abrasive article comprises a backing, a first binder (i.e., a make coat) on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable melt-processable resin containing an epoxy resin, a polyester component, a polyfunctional acrylate component, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated porous cloth material.Type: GrantFiled: September 20, 1996Date of Patent: June 16, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. DeVoe, Gregg D. Dahlke, Kimberly K. Harmon, Craig A. Masmar
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Patent number: 5565011Abstract: Abrasive articles and a method of making the abrasive articles are provided wherein the method laminates a make coat precursor to atypical backing materials that include materials generally deemed inappropriate by those skilled in the art such as open-weave cloth, knitted fabrics, porous cloth, loop materials, untreated paper, unsealed fabrics, opened or closed cell foams, nonwovens, spun-fibers and the like.Type: GrantFiled: November 14, 1995Date of Patent: October 15, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary J. Follett, Craig A. Masmar, Jeffrey S. Peterson, Herb W. Schnabel
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Patent number: 5368618Abstract: A method of preparing a coated abrasive article in which the presence of multiple layers of abrasive grains are minimized. In one variation, the method comprises the steps of: (a) providing a backing; (b) applying a make coat precursor to the backing; (c) partially curing the make coat precursor; (d) applying, preferably by projecting, a plurality of abrasive grains into the partially cured make coat precursor; and (e) completely curing the partially cured make coat precursor. In another variation of this method, a size coat precursor is applied over the abrasive grains and cured make coat, and the size coat precursor is completely cured. In another variation of this method, a size coat precursor is applied over the abrasive grains and the partially cured make coat precursor, and the make coat precursor and the size coat precursor are completely cured. The make coat precursor preferably comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of .alpha.,.beta.Type: GrantFiled: November 3, 1992Date of Patent: November 29, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Craig A. Masmar, Douglas S. Spencer, Elizabeth C. Edblom